ELISA test

Elisa stand for Enzyme-linked immunosorbent Assay which also known as enzyme immunoassay (EIA), contains an enzyme-antibody complex that can be used as a color tracer for antigen-antibody reaction. The enzymes used most often are horseradish peroxidase and alkaline phosphatase, both of which release a dye (chromogen) when exposed to their substrate. This technique also relies a solid support such as a plastic micro titer plate that can absorb (attract on its surface) the reactants.